How to read the value of an analog output on a R-series DAQ

[DAQlover]

I'm trying to program a controller on a PCI-7833R DAQ using the FPGA module. I would like to be able to read the value that is currently being output by an analog output channel. Do I have to physically wire the output channel to an input channel, or can I access it somehow by software? I know this is possible on other DAQ cards, but I don't see a way to do it in the FPGA module. Thanks for your help.

[Arun_V]

Hello DAQLover,

The best way to do this is to just wire the value to an indicator (which is synthesized as a register) as you are writing to the output node, and then read the value of the indicator. This way you will not be wasting an analog input channel.

But to directly answer your question, if you wan to use AO node and AI node, then you would have to physically connect a wire.

Thanks,

Arun V

National Instruments